Works perfectly.
Installed this on a 2000 Kawasaki Vulcan Nomad 1500 FI.
Installation is extremely simple, even more so if you have previous 12v / electrical wiring experience. The instructions provided are clear and easy to follow. I chose the 5 flash then steady mode. The most difficult part of installation is locating the correct brake / run wires on your bike. Once you have that, it's a 10 minute job, and in my case, most of that was spent hunting for a bottle of rubbing alcohol to clean off the mounting location. The unit fit easily under the seat, making the whole thing effectively "NO-profile".
My only negative comment would be that in order to change between modes, one has to physically re-wire the brake line to the other output wire of the unit. It would be nice if this could be accomplished with a dip switch or similar. But in my case this isn't that big of a deal. My bike's brake / run wires u comes factory with bullet connectors easily accessible right under the seat. I soldered matching-sized bullets on the BackOff's output wires, so all I have to do is unplug and plug back in to the other mode wire. If your bike isn't equipped with bullets here, I highly recommend installing some. They'll make testing and changing modes 10X easier.
As for its effect on other drivers - hard to say, although my riding buddy noticed it immediately. I can say that it seems as if people are seeing and reacting to it properly. In instances where I'm already stopped, and I see traffic approaching in the mirrors, a purposeful squeeze or two of the brake lever almost always results in the approaching vehicle seeming to slow sooner, and definitely leaving a significantly larger gap between us.
So far I like it.
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